Shears for metal-workers



(No Model.)

W. L. WARNER.

SHEARS FOR METAL WORKERS.

No. 325,291. I

Patented Sept. 1, 1885.

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\VILLIAM L. \VARNEB, OF NEIV HAVEN, CONNECTICUT.

SHEARS FOR METAL-WORKERS.

SPECIFICATION forming part of Letters Patent No. 325,291, datedSeptember 1, 1885.

Application filed May 23, 18F5.

To all whom it may concern:

Be it known that I, WrLLL-iu L. WARNER, a citizen of the United States,residing at New Haven, in the county of New Haven and State ofConnecticut, have invented certain new and useful Improvements in HandShears for Metal-Workers; and I do declare the following to be a full,clear, and exact description of theinvention, such as will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanyingdrawings, and to the let ters andfigures of reference marked thereon, which form a part of thisspecification.

Figure 1 represents a side view of my improved shears; Fig. 2, an edgeview, and Fig. 3 a section on line 22, Fig.2.

This invention relates to an improvement in that class of shearscommonly called metalworkers hand-shears.

Shears of this class are usually constructed with straight cutting jawsto cutstraight lines in sheets of metal; also there are what is known ascircular-jawed hand-shears, for trimming or evening up the ends ofsheetmetal pipes, or for cutting holes in sheet metal. The curvature orcircle in this class of shears is not on line with thehandle,and isobjectionable and impracticable for their purpose.

The object of my invention is to overcome this objection; and itconsists in the construc tion of the shears as I shall hereinafterdescribe.

A represents the one part, and B the other part, pivoted at C. The partA is provided with two cuttingjaws, (ta, which are in aline with thehandle. The jaws a a are curved opposite from ordinary shears. The partB is provided with a single cuttingjaw, b, with more curvature than thedouble jaws a a and terminates in a point, D, which is extremely sharpor pointed. The jaw b has a gutter or concavity running the length ofits inner surface,so it can be readily and easily sharpened,

(No model.)

making its cutting qualities more efficient. Between the two jaws a a attheir ends is a setscrew, E, which has a collar,c. The object of thescrew is to keep the two ends from spreading apart when the shears arein use. Should there be occasion to sharpen the s ears, the screw E canbe readily tightened to draw more closely the double jaws. The collar orshoulder formed on the screw E is filed or pared down, so as to permitthe two jaws to be drawn more closely together after the shears aresharpened to admit of their being closed so their sharp cutting-edgeswill come closely in contact and not spread. The jaw b is beveled onboth sides for lightness, and may be employed as an edging-tool.

Any desired curvature may be given to the jaws without departing fromthe spirit of the invention.

The mode of operating or using the shears is as follows: The pointedpart D of the single jaw I) is inserted in the metal to be cut, byasingle blow. Then the operator cuts the metal in two pieces (a pipe forinstance) without using a chisel or hammer.

This improved cutter avoids a great waste of metal, and avoids theoccasion of smoothing or rounding up either end of the two out pieces,which has to be done when the chisel is employed. These shears will befound very convenient in cutting pipes and like articles.

I do not wish to be understood as broadly claiming a pair of shears withpointed ends and having concave cuttingedges, as such, I am aware, isnot new.

\Vhat I claim, and desire to secure by Letters Patent, is

In combination with the jaws a a, a setscrew and collar, for the purposeset forth.

In testimony whereof I affix my signature in presence of two witnesses.

\VILLIAM L. IVARNER. iVitnesses:

LUoIUs P. DENNIS, WM. H. ELY.

